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Extending Informix®Beyond standard relational database objects, HCL Informix® can be extended to handle specialized data types, access methods, routines, and other objects. Informix® includes many built-in extensions that are fully integrated in the database server. Informix® also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for Informix®.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in Informix® databases.
DataBlade® Developers KitThe DataBlade® Developers Kit (DBDK) guides contain information about the tools you can use to develop and package DataBlade® modules, which extend the functionality of HCL Informix® databases.
DBDK InfoShelfThe DataBlade® Developers Kit InfoShelf is designed to help you work with BladeSmith.
DataBlade® Developers Kit TutorialThe Tutorial is a set of exercises that demonstrate how to create extensions to HCL Informix® and package them as DataBlade® modules by using DBDK. Support for DataBlade Developers Kit (DBDK) is removed starting Informix Server 14.10.xC6.
Tutorial exercise 5: Using interfacesThis exercise demonstrates how to use interfaces to define how one DataBlade® module depends on another. This exercise has 16 steps. It takes approximately one hour to complete
Creating the Contains() function in the Circle DataBlade® module

Creating the Contains() function in the Circle DataBlade module

About this task

To create the Contains() function:

Procedure

Choose Edit > Insert > Routine, type the following information in the New Routine wizard, and leave all other fields in the wizard as their default values.
Routine Property Value
Routine Name (SQL) Contains

Return type Boolean
Arguments

Name: Circ1, Type: Circle

Name: Pnt1, Type: Point
Click Finish and then choose Project > Save to save your project.

Routine Property	Value
Routine Name (SQL)	Contains
Return type	Boolean
Arguments	Name: Circ1, Type: Circle Name: Pnt1, Type: Point

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